Biological invasions and their negative effects on biodiversity are enhanced by growing international trade and climate change. More than 10 000 non-native species are now present in Europe, 10-15 % of which are considered to have negative economic or ecological effects.

The map shows the distribution of Carpobrotus in Minorca at the end of 2001, just when the LIFE Nature project Conservation of areas with endangered flora in Minorca (LIFE2000NAT/E/7355) was in the initial steps